IHydroxypropyl methyl cellulose HPMC umenzi womthengisi ongumvelisi wefektri eTshayina

I-Tiantai Cellulose Co.,Ltd yiHydroxypropyl methyl cellulose HPMC umenzi womthengisi ongumvelisi wefektri yaseTshayina, enegama lomgangatho ophezulu wegama lebrendi ye-QualiCell® Cellulose ethers.

Ukujonga ngokukhawuleza kwi-hydroxypropyl methylcellulose HPMC

Enye, yeyiphi eyona nto isetyenziswayo ye-hydroxypropyl methyl cellulose?

I-HPMC ISETYENZISWA KAKHULU KWIZINTO EZAKHIWAYO, iingubo, intlaka zokwenziwa, iiseramikhi, amayeza, ukutya, amalaphu, ezolimo, izithambiso, icuba kunye namanye amashishini. I-HPMC inokohlulwa ibe kwibakala loshishino, ibakala lokutya kunye nebakala lamayeza ngokokusetyenziswa kwayo.

Isibini, i-hydroxypropyl methyl cellulose yahlulwe yaba ziindidi ezimbalwa, phakathi kwazo yintoni umahluko?

I-HPMC inokohlulwa ibe uhlobo olukhawulezayo (isimamva sebakala “S”) kunye nohlobo olunyibilikayo olushushu, iimveliso zangoko nangoko, kumanzi abandayo asasazeke ngokukhawuleza, anyamalale emanzini, ngeli xesha ulwelo aluna viscosity, kuba HPMC isasazeke nje emanzini. , akukho ukutshatyalaliswa kwangempela. Malunga nemizuzu emi-2, i-viscosity ye-liquid iyanda ngokukhawuleza, yenza i-viscous colloid ecacileyo. Iimveliso ezishushu ezinyibilikayo, kumanzi abandayo, zinokusasazwa ngokukhawuleza emanzini ashushu, zinyamalale emanzini ashushu, njengeqondo lobushushu ukuya kutsho kubushushu obuthile (ngokobushushu bejeli yemveliso), i-viscosity ibonakala kancinci, kude kube yi-viscous ebonakalayo. i-colloid.

Okwesithathu, indlela yesisombululo se-hydroxypropyl methyl cellulose inantoni?

1. Zonke iimodeli zingongezwa kwizinto eziphathekayo ngendlela yokuxuba okomileyo;

I-2, kufuneka yongezwe ngokuthe ngqo kwisisombululo samanzi sobushushu obuqhelekileyo, kungcono ukusebenzisa uhlobo lokusasaza kwamanzi abandayo, emva kokongeza ngokubanzi kwimizuzu eyi-10-90 ukujiya (ukuvuselela, ukuvuselela, ukuvuselela)

3. Imodeli eqhelekileyo ihlakazwa kuqala ngokuxubha ngamanzi ashushu, ize ichithwe ngokungeza amanzi abandayo emva kokuvuselela nokupholisa.

4. Ukuba i-caking and wrapping phenomenon yenzeke xa ichithwa, kungenxa yokuba ukuxuba akwanelanga okanye imodeli eqhelekileyo yongezwa ngokuthe ngqo kumanzi abandayo. Ngeli xesha, kufuneka ixutywe ngokukhawuleza.

5. Ukuba iibhubhu ziveliswa xa zichithwa, zinokushiywa kwiiyure ezingama-2-12 (ixesha elithile lichongwa ngokuhambelana kwesisombululo) okanye lisuswe nge-vacuum-extraction, i-pressurization kunye nezinye iindlela, kunye nesixa esifanelekileyo se-agent antifoaming. nako kongezwa.

Okwesine, kulula kangakanani kwaye kulula kangakanani ukumisela ukuma okanye ukuwa kwe-hydroxypropyl methyl cellulose?

I-1, ubumhlophe, ubumhlophe nangona ingakwazi ukumisela ukuba i-HPMC ilungile, kwaye ukuba yongezwa kwinkqubo yokuvelisa i-whitener, iya kuchaphazela umgangatho wayo, kodwa, iimveliso ezilungileyo ubukhulu becala ubumhlophe bulungile.

2, ukucoleka: HPMC ukucoleka ngokubanzi 80 umnatha kunye 100 umnatha, 120 ngaphantsi, icoleke kokukhona ngcono.

I-3, ukukhanya okudluliswayo: I-HPMC emanzini, isenza i-colloid ecacileyo, ibone ukukhanya kwayo, i-penetrability enkulu, ichaza i-insolubles encinci ngaphakathi, i-kettle yokusabela ngokuthe nkqo ngamadigri alungile, iya kuthumela i-horizontal reaction kettle, kodwa ayikwazi ukuchaza umgangatho wemveliso yeketile ethe nkqo ungcono kunemveliso yeketile yobuxoki, zininzi izinto ezimisela umgangatho wemveliso.

I-4, umlinganiselo: ubukhulu becala, ubunzima bungcono, kunobukhulu, ngokuqhelekileyo kuba umxholo we-hydroxypropyl uphezulu, umxholo we-hydroxypropyl uphezulu, ngoko ukugcinwa kwamanzi kungcono.

Isihlanu, i-hydroxypropyl methyl cellulose kwisixa se-putty powder?

HPMC ekusetyenzisweni eyiyo umthamo, ngokusingqongileyo imozulu, ubushushu, umgangatho calcium ash yendawo, putty umgubo ifomula kunye neemfuno zabathengi bomgangatho ezahlukeneyo, kwaye kukho iyantlukwano ngeenxa, ukuthetha ngokubanzi, phakathi 4-5 kg.

Ezintandathu, i-hydroxypropyl methyl cellulose viscosity ingcono kakhulu?

Yiba nesithukuthezi NGOMNTWANA POWDER KUJIKELELE 100 IWAKA KULUNGILE, IMFUNEKO EMORTAR IMDE ETHILE, UFUNA 150 WAWAKA NJE UKUBA KULUNGILE ukusebenzisa, kwaye, HPMC indima ebaluleke ngakumbi kugcino lwamanzi, ngokulandelayo ukujiya. Kwi-putty powder, nje ngokuba ukugcinwa kwamanzi kulungile, i-viscosity iphantsi (7-8), kunokwenzeka kwakhona, ngokuqinisekileyo, i-viscosity inkulu, ukugcinwa kwamanzi okuhambelanayo kungcono, xa i-viscosity ingaphezulu kwe-100,000. , i-viscosity inempembelelo encinci ekugcinweni kwamanzi.

Zisixhenxe, zeziphi izikhombisi eziphambili zobugcisa ze-hydroxypropyl methyl cellulose?

Umxholo weHydroxypropyl

Umxholo weMethyl

i-viscosity

uthuthu

Ukuncipha kobunzima bomileyo

Esibhozo, zeziphi ezona mathiriyeli ziphambili ze-hydroxypropyl methyl cellulose?

Izinto eziphambili ze-HPMC: umqhaphu ococekileyo, i-chloromethane, i-propylene oxide, ezinye izinto eziluhlaza, iipilisi ze-alkali, i-acid toluene.

Isithoba, i-hydroxypropyl methyl cellulose ekusebenziseni i-putty powder, indima ephambili, nokuba yikhemikhali?

Kwi-putty powder, idlala iindima ezintathu: ukuqina, ukugcinwa kwamanzi kunye nokwakhiwa. Ukujiya, iselulosi zinokujiya ukudlala ukunqunyanyiswa, ukuze isisombululo ukugcina iyunifomu phezulu naphantsi indima efanayo, ukuqukuqela anti ejinga. Ukugcinwa kwamanzi: yenza iputty powder yome kancinci, i-axiliary ash calcium reaction phantsi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inefuthe lokuthambisa, inokwenza i-putty powder inokwakhiwa okulungileyo. I-HPMC ayithathi nxaxheba kuyo nayiphi na intshukumo yeekhemikhali, idlala indima encedisayo kuphela.

IHydroxypropyl methyl cellulose yi-non-ionic cellulose ether, ke yintoni engeyo-ionic?

Ngokuqhelekileyo, izinto ezingenamsebenzi azithathi nxaxheba kwiikhemikhali.

I-CMC(i-carboxymethyl cellulose) yeye-cationic cellulose, ngoko ke ukudibana ne-calcium engwevu kuya kuba yi-slag yembotyi.

11. Yintoni ubushushu bejeli ye-hydroxypropyl methylcellulose enxulumene nayo?

Ubushushu bejeli ye-HPMC inxulumene nomxholo wayo we-methoxy. Ukunciphisa umxholo we-methoxy, uphezulu ubushushu be-gel.

Ishumi elinesibini, i-putty powder powder kunye ne-hydroxypropyl methyl cellulose abanalo ubudlelwane?

Ibalulekile!! I-HPMC ayigcini kakuhle amanzi, iya kubangela umgubo.

13. Uthini umahluko phakathi kwesisombululo esikhawulezileyo samanzi abandayo kunye nesisombululo esishushu se-hydroxypropyl methyl cellulose kwinkqubo yokuvelisa?

Uhlobo olunyibilikayo lwe-HPMC lwamanzi abandayo lusemva konyango lomphezulu we-glyoxal, emanzini abandayo asasazeke ngokukhawuleza, kodwa anganyibiliki ngokwenene, i-viscosity phezulu, iyanyibilika. Uhlobo olunyibilikayo lobushushu aluzange luphathwe phezulu nge-glyoxal. Umthamo we-glyoxal mkhulu, ukusabalalisa ngokukhawuleza, kodwa i-viscosity iyacotha, umthamo uncinci, ngokuchaseneyo.

14, ivumba le-hydroxypropyl methyl cellulose yindlela yokubuyisela uxanduva?

I-HPMC eveliswa yindlela yokunyibilikisa yenziwe ngetoluene kunye ne-isopropyl alcohol njengesinyibilikisi. Ukuba ukuhlamba akukuhle kakhulu, kuya kubakho incasa eseleyo. (Ukubuyiswa kwe-neutralization yinkqubo ephambili yevumba)

I-15, ukusetyenziswa okwahlukileyo, indlela yokukhetha i-hydroxypropyl methyl cellulose efanelekileyo?

Umgubo wePutty: iimfuno zokugcina amanzi aphezulu, ukukhululeka okuhle kolwakhiwo (ibakala elicetyiswayo: 7010N)

Udaka oluqhelekileyo lwesamente: ukugcinwa kwamanzi aphezulu, ukumelana nobushushu obuphezulu, i-viscosity ekhawulezileyo (ibakala elicetyiswayo: HPK100M)

Ukusetyenziswa kweglue yokwakha: iimveliso ezikhawulezayo, i-viscosity ephezulu. (Ibrendi ecetyiswayo: HPK200MS)

I-Gypsum mortar: ukugcinwa kwamanzi aphezulu, i-viscosity ephakathi kunye nephantsi, i-viscosity esheshayo (ibakala elicetyiswayo: HPK600M)

16, i-hydroxypropyl methyl cellulose yintoni isibizo?

I-HPMC okanye i-MHPC i-alias hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether.

Ishumi elinesixhenxe, i-hydroxypropyl methyl cellulose ekusetyenzisweni kwe-putty powder, i-putty powder bubble sisiphi isizathu?

I-HPMC kwi-putty powder, idlala iindima ezintathu zokuqina, ukugcinwa kwamanzi kunye nokwakhiwa, isizathu se-bubble:

1. Amanzi amaninzi ayongezwa.

2. Umzantsi awusomile, phezu kolunye umaleko wokukrala, kwakhona kulula ukubhobhoza.

Ishumi elinesibhozo, i-hydroxypropyl methyl cellulose kunye ne-MC yintoni umahluko:

I-MC yi-methylcellulose, eyenziwe ngekotoni esulungekileyo emva konyango lwe-alkali kunye ne-methane chloride njenge-etherification agent ngoluhlu lweempendulo ukwenza i-cellulose ether. Ngokuqhelekileyo, iqondo lokuthatha indawo yi-1.6-2.0, kwaye ukunyibilika kweedigri ezahlukeneyo zokutshintsha kwakhona kuyahluka, okuye-ether ye-non-ionic cellulose.

(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuxhomekeke kwisixa sayo sokongeza, i-viscosity, i-particle fineness kunye nesantya sokuchithwa. Ngokuqhelekileyo, ukuba inani lokongezwa likhulu, ukulunga kuncinci kwaye i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu. Isixa sokongeza sinempembelelo enkulu kwisantya sokugcinwa kwamanzi, kwaye i-viscosity ayihambelani nesantya sokugcinwa kwamanzi. Isantya sokunyibilika sixhomekeke ikakhulu kwiqondo lokuguqulwa komphezulu wamasuntswana e-cellulose kunye nokucoleka kwamasuntswana. Kule cellulose ether imethyl cellulose kunye nehydroxypropyl methyl cellulose izinga lokugcinwa kwamanzi liphezulu.

(2) I-Methyl cellulose inokunyibilika emanzini abandayo, ukuchithwa kwamanzi ashushu kuya kudibana nobunzima, isisombululo saso samanzi kuluhlu lwe-pH = 3-12 luzinzile kakhulu, kunye nesitashi, kunye nokuhambelana okuninzi kwe-surfactant kulungile, xa ubushushu bufikelela kwiqondo lokushisa. ubushushu be-gelation, i-gelation phenomenon iya kwenzeka.

(3) Ukutshintsha kweqondo lobushushu kuyakuchaphazela kakhulu izinga logcino lwamanzi e-methyl cellulose, ubukhulu becala ukuba phezulu kwamaqondo obushushu, kokukhona kubi kakhulu ukugcinwa kwamanzi. Ukuba ubushushu bomdaka budlula ama-40 degrees, ukugcinwa kwamanzi kwe-methyl cellulose kuya kuba kubi kakhulu, kuchaphazela kakhulu ukwakhiwa kodaka.

(4) I-Methyl cellulose inefuthe elicacileyo ekwakhiweni nasekubambeleleni kodaka. Apha, i-adhesion ibhekisela kumandla okunamathela avakalelwa phakathi kwesixhobo sokudambisa abasebenzi kunye ne-substrate eludongeni, oko kukuthi, ukuxhathisa ukucheba kodaka. Ipropathi yokunamathela inkulu, ukuxhathisa kwe-shear yodaka kukhulu, kwaye amandla afunwa ngabasebenzi kwinkqubo yokusetyenziswa nawo mkhulu, ngoko ke ipropati yokwakhiwa kodaka ihluphekile.